1967.0000000;-0.9043419
1968.0000000;0.0855964
1969.0000000;-0.8614228
1970.0000000;-0.8770991
1971.0000000;-1.6608129
1972.0000000;-0.6380656
1973.0000000;-1.2077711
1974.0000000;-1.2135602
1975.0000000;-0.9379022
1976.0000000;-1.5159237
1977.0000000;0.2449136
1978.0000000;0.2649663
1979.0000000;-0.4904242
1980.0000000;0.1949796
1981.0000000;0.2020627
1982.0000000;-0.1014257
1983.0000000;-0.3501512
1984.0000000;0.8387108
1985.0000000;-0.0344876
1986.0000000;-1.3041687
1987.0000000;-0.6710495
1988.0000000;-0.1100650
1989.0000000;-1.4935206
1990.0000000;-1.7348630
1991.0000000;-1.5587453
1992.0000000;-1.8967342
1993.0000000;-0.9291210
1994.0000000;-0.7997200
1995.0000000;0.5161241
1996.0000000;-0.5317336
1997.0000000;-1.0663698
1998.0000000;-1.8389928
1999.0000000;-0.9680987
2000.0000000;-1.4631679
2001.0000000;0.7757981
2002.0000000;-1.2706940
2003.0000000;-2.6183834
2004.0000000;-2.1114120
2005.0000000;-2.1575742
2006.0000000;-1.4762036
2007.0000000;-1.3757511
2008.0000000;-1.5614913
2009.0000000;-2.2865555
2010.0000000;-1.2588327
2011.0000000;-2.3784108
2012.0000000;-2.2896404
2013.0000000;-0.9907446
2014.0000000;-1.4060214
2015.0000000;-2.2708659